Mayor de Blasio said he's glad Mark Peters, his former campaign treasurer, recused himself from an investigation into campaign donations. Peters heads the city's Investigation Department.

“I did not talk to Mr. Peters, but I'm glad he recused himself, that was the right decision,” de Blasio said, without elaborating.

The mayor also declined to say whether he’s personally been contacted by federal investigators looking into allegations that two de Blasio donors curried favors from NYPD brass in exchange for gifts.

“I've said to you also that I'm not going to get into the details day by day,” he responded.

Manhattan U.S. Attorney Preet Bharara is looking into whether donors Jona Rechnitz and Jeremy Reichberg sought favors from de Blasio agencies in exchange for writing checks to the mayor’s campaign and a non-profit that supports the mayor’s pet causes.

Manhattan U.S. Attorney Preet Bharara is looking into whether two donors sought favors from de Blasio agencies in exchange for writing checks to the mayor’s campaign and a non-profit that supports the mayor’s pet causes.

So far no evidence of this has surfaced, and the mayor has said he knows of no municipal action taken on behalf of either donor.

The mayor’s campaign committee last week retained a lawyer from the lobbyist law firm of Kramer Levin Naftalis to assist the U.S. attorney with document requests.

“The bottom line here is, we hold ourselves to very high ethical standards. We're going to cooperate, we actually reached out, as you know, to the U.S. Attorney’s office to say we're happy to cooperate,” de Blasio said.